Graphical symbols for use on equipment; index, survey and compilation of the single sheets; 7th Supplement

This document outlines a specialized supplement dedicated to graphical symbols used on equipment. It serves as an expansion to the broader system of standardized pictograms, focusing specifically on the organization, indexing, and compilation of these visual indicators. The material provides a comprehensive overview designed to assist in the systematic arrangement of symbols, ensuring consistency across various technical applications. By offering a supplementary compilation of single-sheet references, it facilitates easier access to specific graphical elements required for labeling and operation instructions. The content integrates additional symbols into the existing framework, addressing gaps or emerging needs in industrial and technical documentation. It is structured to support the clarity and uniformity of equipment marking, enabling manufacturers and users to interpret visual information accurately. The supplement acts as a reference tool for updating and extending the catalog of approved symbols, contributing to global interoperability in technical communication without altering the core principles of the main series.